Make EUserSelect an enum class.

third_party/WebKit/Source/core/dom/Node.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  *
@@ skipping 1029 matching lines @@
 // questions about HTML in the core DOM class is obviously misplaced.
 bool Node::CanStartSelection() const {
   if (HasEditableStyle(*this))
     return true;
 
   if (GetLayoutObject()) {
     const ComputedStyle& style = GetLayoutObject()->StyleRef();
     // We allow selections to begin within an element that has
     // -webkit-user-select: none set, but if the element is draggable then
     // dragging should take priority over selection.
-    if (style.UserDrag() == DRAG_ELEMENT && style.UserSelect() == SELECT_NONE)
+    if (style.UserDrag() == DRAG_ELEMENT &&
+        style.UserSelect() == EUserSelect::kNone)
       return false;
   }
   ContainerNode* parent = FlatTreeTraversal::Parent(*this);
   return parent ? parent->CanStartSelection() : true;
 }
 
 // StyledElements allow inline style (style="border: 1px"), presentational
 // attributes (ex. color), class names (ex. class="foo bar") and other non-basic
 // styling features. They also control if this element can participate in style
 // sharing.
@@ skipping 1561 matching lines @@
   if (node) {
     std::stringstream stream;
     node->PrintNodePathTo(stream);
     LOG(INFO) << stream.str();
   } else {
     LOG(INFO) << "Cannot showNodePath for <null>";
   }
 }
 
 #endif